> For the complete documentation index, see [llms.txt](https://piotreq-scripts.gitbook.io/piotreq-scripts/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://piotreq-scripts.gitbook.io/piotreq-scripts/assets-and-guides/police-mdt/setup-server.md).
# Setup Server
How to setup server for GPT
## SSN / Citizen ID System \[FOR ESX]
If you already use system like this just skip this part
1. Go to your es\_extended / server / main.lua and find variable "loadPlayer"
2. if you find that, add in this `id` like on screenshot below.
Example
3. Next scroll to function LoadESXPlayer and add `ssn = nil` in userData table
4. Next add `userData.ssn = tonumber(result.id)` below `result`
Example
5. Next scroll to `local xPlayer = CreateExtendedPlayer` and add `userData.ssn` in arguments
6. Next add `Core.playersBySsn[userData.ssn] = xPlayer` like on screenshot
Example
7. Next scroll to `playerDropped` event handler and add `Core.playersBySsn[xPlayer.ssn] = nil` also do it in `esx:playerLogout`
Example
8. Next go to server / common.lua and add `Core.playersBySsn = {}`
Example
10. Next go to server / functions.lua and add new function like on screenshot
Example
11. Next go to server / classes / player.lua and add `ssn` argument in function `CreateExtendedPlayer`
12. Next add `self.ssn = ssn` and add statebag `stateBag:set("ssn", self.ssn, true)`
Example
13. Thats all, at the end make sure ur column `id` in users are auto increment
***
## VIN System
You can skip this part if you already use one.
1. Go to your vehicle shop server side file and find MySQL execute to database like on screenshot.
Example
2. Next add vin in columns and values like on screenshot below.
Example
3. And thats all, if you want to add vin for givecar script, its very similiar.
```lua
exports['piotreq_gpt']:GenerateVIN() -- only server side
```
